Troubleshooting guide

Cisco DSL Router Configuration and
Troubleshooting Guide
This document helps you configure your Cisco Digital Subscriber Line (DSL) Customer Premise Equipement
(CPE) Router for Asymmetric Digital Subscriber Line (ADSL) service. This document explains how to
configure ADSL service on the Cisco SOHO series, 820 series, and ADSL WAN interface cards (WICs). Four
service types are discussed, and a sample configuration is included for each service. These configurations
were built from a Cisco 827 Series router.
Note: When configuring an ADSL WIC, please verify the labeling of your ATM interfaces so that it
corresponds with ATM0 and the subinterface ATM0.1 on a Cisco DSL Router. Refer to the ADSL WIC
section for more ADSL WIC cross−platform information such as hardware and software requirements.
If you are not familiar with configuring Cisco devices, the step−by−step configuration examples may be
helpful in guiding you through the configuration process from start to finish.
The configuration instructions will help you do the following:
Gather required information from your Internet Service Provider (ISP).
Important: You must have this information to correctly configure your Cisco DSL Router.
The links to the ADSL services in the next section include forms for you to use in obtaining the
required information.
•
Configure your DSL Router.•
Troubleshoot your ADSL service if it isn't working properly.•
Open a case with the Cisco Technical Assistance Center (TAC) online or by telephone. This step may
be needed if you have used the troubleshooting procedure and your ADSL service is still not working.
•
Types of Service
Select a procedure based on the type of ADSL service your ISP provides.
Point−to−Point Protocol over Ethernet (PPPoE)
Point−to−Point Protocol over ATM (PPPoA)
RFC1483 Bridging
RFC1483 Routing
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Cisco DSL Router Configuration and Troubleshooting Guide